Long-lasting phosphorescence and photostimulated long-lasting phosphorescence in Mn2+-doped alumino-phosphofluoride glasses irradiated by a femtosecond laser

We report on long-lasting phosphorescence and photostimulated long-lasting phosphorescence phenomena in femtosecond laser-irradiated Mn2+-doped alumino-phosphofluoride glasses. Long-lasting phosphorescence was observed in the glass samples after the irradiation of the focused femtosecond laser. Photostimulated long-lasting phosphorescence was observed in the femtosecond laser pre-irradiated region by excitation of an ultraviolet light of 365 nm, after the femtosecond laser-induced long-lasting phosphorescence decayed completely. The mechanisms of these phenomena have been discussed. These phenomena have potential uses in three-dimensional ultra-high-density optical recording.

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Three-Dimensional Magneto-Optical Recording

MRS Proceedings ◽

10.1557/proc-834-j3.1 ◽

2004 ◽

Vol 834 ◽

Author(s):

Akiyoshi Itoh

Keyword(s):

Storage System ◽

Three Dimensional ◽

Optical Recording ◽

High Density ◽

The Novel ◽

National Project ◽

3 Dimensional ◽

Disk Storage ◽

High Density Recording ◽

New Type

ABSTRACTIn this report, the newly developed three-dimensional magneto-optical (MO) recording scheme and the experimental results are reported. A part of this work has been done as the national project of 3D-MO (3-dimensional MO) project. It started at September 1998 and ended March 2002 as a part of the national project “Nanometer-Scale Optical High Density Disk Storage System” and aimed at achieving 100 Gb/in2 in storage density. Three-dimensional MO recording is one of the prosperous candidates of next generation ultra high density recording. Magnetic amplifying MO system (MAMMOS) is employed for achieving the novel three-dimensional MO recording. Double-MAMMOS scheme consists of 2-recording layers of differing compensation temperature (Tcomp ) and one readout layer was proposed and discussed.With write/read test it is succeeded to show the results corresponding to a 100 Gb/in2 (50 Gb/in2 × 2) recording density. We also proposed and showed results of simulations of a new type of Double-MAMMOS in which the recording layers can hold quadri-valued information by single writing process.

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Demonstration of high-density three-dimensional storage in fused silica by femtosecond laser pulses

Journal of Applied Physics ◽

10.1063/1.1589596 ◽

2003 ◽

Vol 94 (3) ◽

pp. 1304-1307 ◽

Cited By ~ 12

Author(s):

Guanghua Cheng ◽

Yishan Wang ◽

J. D. White ◽

Qing Liu ◽

Wei Zhao ◽

...

Keyword(s):

Femtosecond Laser ◽

Three Dimensional ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

Fused Silica ◽

High Density

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Three-Dimensional Maskless Fabrication of Bionic Unidirectional Liquid Spreading Surfaces Using a Phase Spatially Shaped Femtosecond Laser

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c22080 ◽

2021 ◽

Vol 13 (11) ◽

pp. 13781-13791

Author(s):

Xiaozhe Chen ◽

Xin Li ◽

Pei Zuo ◽

MiSheng Liang ◽

Xiaojie Li ◽

...

Keyword(s):

Femtosecond Laser ◽

Three Dimensional ◽

Liquid Spreading

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Mechanisms of three-dimensional structuring of photo-polymers by tightly focussed femtosecond laser pulses

Optics Express ◽

10.1364/oe.18.010209 ◽

2010 ◽

Vol 18 (10) ◽

pp. 10209 ◽

Cited By ~ 151

Author(s):

Mangirdas Malinauskas ◽

Albertas Žukauskas ◽

Gabija Bičkauskaitė ◽

Roaldas Gadonas ◽

Saulius Juodkazis

Keyword(s):

Femtosecond Laser ◽

Three Dimensional ◽

Laser Pulses ◽

Femtosecond Laser Pulses

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Warpage and Reliability of Three-dimensional Multi-chip Module with High Density Embedded Substrate

2007 8th International Conference on Electronic Packaging Technology ◽

10.1109/icept.2007.4441521 ◽

2007 ◽

Cited By ~ 1

Author(s):

Gaowei Xu ◽

Jian Zhou ◽

Le Luo

Keyword(s):

Three Dimensional ◽

High Density

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Fabrication of Three-Dimensional Micro-Structures with Two-Photon Absorption by Femtosecond Laser

Materials Science Forum ◽

10.4028/www.scientific.net/msf.532-533.568 ◽

2006 ◽

Vol 532-533 ◽

pp. 568-571

Author(s):

Ming Zhou ◽

Hai Feng Yang ◽

Li Peng Liu ◽

Lan Cai

Keyword(s):

Photonic Crystal ◽

Femtosecond Laser ◽

Detection System ◽

Three Dimensional ◽

Photon Absorption ◽

Micro Fabrication ◽

Two Photon Absorption ◽

Two Photon ◽

Photo Polymerization ◽

System A

The photo-polymerization induced by Two-Photon Absorption (TPA) is tightly confined in the focus because the efficiency of TPA is proportional to the square of intensity. Three-dimensional (3D) micro-fabrication can be achieved by controlling the movement of the focus. Based on this theory, a system for 3D-micro-fabrication with femtosecond laser is proposed. The system consists of a laser system, a microscope system, a real-time detection system and a 3D-movement system, etc. The precision of micro-machining reaches a level down to 700nm linewidth. The line width was inversely proportional to the fabrication speed, but proportional to laser power and NA. The experiment results were simulated, beam waist of 0.413μm and TPA cross section of 2×10-54cm4s was obtained. While we tried to optimize parameters, we also did some research about its applications. With TPA photo-polymerization by means of our experimental system, 3D photonic crystal of wood-pile structure twelve layers and photonic crystal fiber are manufactured. These results proved that the micro-fabrication system of TPA can not only obtain the resolution down to sub-micron level, but also realize real 3D micro-fabrication.

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